參數(shù)資料
型號: MB91340PMT
元件分類: 微控制器/微處理器
英文描述: 32-BIT, MROM, 66 MHz, RISC MICROCONTROLLER, PQFP176
封裝: PLASTIC, LQFP-176
文件頁數(shù): 98/126頁
文件大?。?/td> 1501K
代理商: MB91340PMT
MB91340/MB91V340
73
9.
U-TIMER (16 bit timer for UART baud rate generation)
The U-TIMER is a 16-bit timer used to generate the baud rate for the UART. Any desired baud rate can be set
using the combination of the chip operating frequency and U-TIMER reload value.
The U-TIMER can also be used as an interval timer by generating an interrupt from a count underflow event.
The MB91340/MB91V340 has three U-TIMER channels. When used as an interval timer, two U-TIMER channels
can be connected in cascade for a maximum count interval of up to 232
× φ.
Cascade connection is only available for channel 0 and channel 1 or channel 0 and channel 2.
Block Diagram
Register List
UTIMR (reload register)
UTIM (timer)
clock
load
underflow
under flow U-TIMER 1
to UART
control
f.f.
15
0
MUX
Channel 0
only
φ (CLKP)
(Peripheral clock)
UTIMR
UTIM
UTIMC
(W)
(R)
(R/W)
15
0
87
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